Digging-bucket.



J. J. REHALLY.

DIGGING BUCKET.

APPLICATiON HLED Y 26, ms.

Patented Fb. J, 1917' 2 SHEETS-SHEEP 1 1.1. REHALLY.

DIGGING BUCKET.

' APPLICATION FILED MAY 26. 1M5. v 1,217,500. Patented Feb. 27,1917.

2 SHEETS-SHEET 2.

STATES PATENT omen.

JOHN .T. REKALLY, ornnw YORK, N. Y.

DIGGING-BUCKET.

Application filed May 26, 1915.

To all whom it may concern:

Be it known that I, JOHN J. ,REHALLY, a subject of the King of Great Britain, having declared my intention of becoming a citizen of the United States, residing in New York city, borough of Manhattan, county of New ew York, have ind useful Improveme ts in Digging-Btckets, of which the following is a specification.

My invention relates to new and useful improvements indigging buckets employed in excavating operations, and more p-articw larly of the types provided witlra. wall having a digging edge to cut or break Into the material to be excavated or lifted and transferred by the bucket. The pruned: ob ect of the invention is to provide a buck which will be simple in construction and in which the digging wall will be of improved; construction, particularly asjegards the construction and farjangement of the teeth which engage ,themater al to be excavated or hoisted, and which will be of cat strength and durability. A- further o ject is to provide improvedrmeans for connecting the teeth to the bucket wall whereby said teeth willbe rigidly and firmly held in position during the operation of the bucket, but may be readily interchanged when the replacement or repair ofithe teeth 18 re guired. Agfiitther object is to provide a w ail of the bucket with means for the teeth thereto which will be so theteeth will isging securing constructed that clogglng of be" obviated.

A furtherand important object is to so] construct cnd'design the front or digging wall of the bucket that it ma be readily cast from suitable metal and w be ready for-use without additional milling or machine work.

Another object is to provide a front or will be adapted for use wit various types and availableion the market, whether said teeth are of one or more parts.

The "invention consists in the improvements to be more fully described hereinafter, and the novelty of which will be perticw larly pointed out and distinctly claimed.

I have fully and clearly illustrated my invention in the accompanying drawings to Specification of Letters Patent.

en cast will forms of teeth" now Patented Feb. 2c, 1917.

Serial No.30,495.

be taken as nv part of this specification, end wherein- Figure 1 ise view in side elevation of one type of digging bucket constructed in uccordence with my invention,

Fig. 2 is a view partially in front elevation and partially in cross-section of the bucket shown in Fig. I, the broken away portion being on the line 2-2, Fig. 6,

Fig. 3 is a section on the line 3-3 of Fig. 2,

4 is a disassembled perspective view of aportion of the bucket bottom or digging wall and one of the teeth, the latter being. 1n position. to be attached to the bucket, wal

Fig.' 5 is a front view of the front or dig- '70 ging wall with one tooth removed, and- Fig. 6 1s a rear view of the front-or digging wallwith one tooth removed.

Referring to the drawings by characters of reference, 1 designates generally'a bucket body of the character or .typ'e'employed in" connection with a beam 2 adapted to be carried by the swinging boom of anexcaveting machine of well'known type (not shown). As my invention is; applicable generally to buckets of this type without regard to the specific construction thereof, I do not deem it necessary to enter into a specific description' of the construction of such bucket. It is suflicient to state that it may consist of side wallsB, 4, a reer wall 5, and a front discharged through the bottom of the bucket; The front Wall 6 of the bucket 1 is curved transversely as shown in Fig. 2, the side edges of. said wall beingriveted or otherwise suitably secured to the side walls 3 an 4. This'wall' 6 is provided at its forwt. (1 portion with a cutting or digging edge 9, which is adapted to cut or bite intothe material being excavated,,in the case of loose material, or to forced under solid material, such .asrock, to cause-the material tonter the open end of thg' bucket. It is the experience in the operation of such buckets can, the greatest Wear and tear is exerted upon this front or. digging wall as it is .the

I Qnewhich either forciblyjenga es or is .en-

'gljged by' the material when t e bucket" is being filled, and it is one of the important pur oses of my invention to provide a front w-a1 which will be extremely rigid and strong so as to withstand this wear and tear.

Ipreferably make the front wallof cast metal, for instance, manganese steel, cast to the desired form, and provide the same with' improved means for securing in place the teeth or prongs for cutting into or breaking the material being excavated. I preferably .provide each of thesi'de edges of the front wall with a longitudinally extending external flange 10a'gainst which the edge-of the "side wall abutsi,"so that when the front and-side walls are riveted. together, as

' shown, the rivets will be relieved of shear ingstrains. The said digging or front wall is also provided with: end. flanges 11, 11

against which engage the ,ends of front and back reinforcing bands 12,13, which are riveted to the side walls and the digging wall, the engagement of the bands with said flanges 11, ll, relieving the rivets of shearing strains, 1 preferably extend the sides of the digging wall up far'enough at the sides of the bucket, as indicated in dotted lines in Fig.1, so as to permit the pivoting of the bail on the rigid front wall construction'and give added strength to the structure. I will now proceed to'describe the improved means for interchangeably securing in place on thedigging wall the digging teeth or prongs. I provide the front edge portion of the diggingwall with a plurality of bosses or enlargements ll .spaced'from' each other in parallel relation and extending longitudinally of said digging Wall, each of these bosses being provided with a longitudinally extending groove or channel 15,

formed by parallel side Walls or fianges 16, formed by the said boss orenlargement, the

forward ends of said channels eachopening through the front edge of the bucket, and the rear end terminating at a point short of the rear end of the boss or enlargement to provide a transverse bridge-piece 17 spaced from the plane of the bottom wall. The

bottom of each channel 15 is closed by a transverse web 18 lying in the same plane as said digging wall, the forward edge of the 'web being cut away to provide recesses 19 extendin inward from the front edge of the digging wall. Web 15, and beneath the bridge piece 17, is

an opening 20 through the bucket front Wall.

Thisiopening is useful in cleaning out the .space between the bridge-piece after casting,

and also affords access'by a tool to the rear engage the in er At the rear end of the end of a tooth should the latter become jammed so as to render removal thereof difli- I cult when repla ement or repair of the tooth is necessar The openin clearance or .the rear on of the tooth should the latter be torn loose from the front of'thebu'cket and mo ved upward, as the rear end of the tooth may enter the said opening .and prevent breakage of the bridge-piece.

The rear-end portions of the bosses 51 are curved from the rear end of the chflmel 15 downward and rearward toward thegbottom of the bucket wall, and merge gradually into the latter so as to provide a smooth rounded surface in rear of the teeth, of such configuration as to obviate the clogging of material,

such as earth, upon-said bosses.

21 designates generally one ,pf the teeth, the same consisting of a 'forward'cuttin portion 22, preferably of chidel form and provided with arearward extending shank 23 adapted to be inserted in the channel 15 also provides formed by" the flanges of one of the bosses,

in ro'ection 25 ada ted to project under n13 ital E ge-piece ;17, eretofore described, said shank havin at the base of said locking projection a shoulder-26 to engage the front face of said bridge-piece, as clearly shown in Fig. 3.- Upon its lower portion and at the base of the chisel head or cutting portion, the tooth is provided with a rearward projection 27, spaced from the under face o the shank to' form a recess 28, which projection 27, when the tooth is assembled on the bucket, extends beneath the bottom wall, and said recess receives the front edge of the bucket, all as clearl shown in Fig. 3. The tooth shank is proviriiad with a flat-n11- der face 30 which rests upon the web 18,

heretofore described. Itwill'be seen that,

when the tooth is in assembled position, the locking projection 25 at the rear of the shank will prevent rocking of the tooth in one direction through the plane of the wall 6 while the. engagement of the projection 27 and the recess 28' with the forward mi ge of .the digging wall, will prevent rocking or movement in the opposite direction, so that the tooth will be securely 'held in position against dislodgmentiby any of the-forces ordinarily operating to exert strains?-11pon the tooth. Lateral 'mov'ement-otjth is prevented by the side i 1: be readily l dislodgment of the tooth b movement longitudinally of itself and o the channel 15,

. may

insert a locking 'pin or rivet 31 through the shank-of the tooth and the web.

to prevent the tooth from slipping out of place. The outer side portions of the bosses constituting. the side walls or flanges of the channels 15 are preferably concaved and re- 'duced to substantially a sharp edge at their upper edges so as to in effect cause the por-' tic s of an stantially coincident, and. also provide a smooth r unded surface between. adjacent pairs of anges, and, therefore, obviate the existence of any projections or creviees which would belia 1e to receive and hold the dirt or other material being excavated.

I do ot desire to be .limited to the exact form 0 tooth shown as other forms of teeth In y be employed without departing from my invention.

I desire it understood that the application of my invention to excavate bucket wall between the teeth,

ing buckets of the type illustrated and de-' scribed, as it is within the scope of my in-' material to be moved.

the side faces of the teeth to be subprovided with flanges extending longitudinally thereof inward from an I do not limit ention to include all types of buckets in which the bucket digs or is filled byforcing a wall thereof into,

What I claim' and desire to secure by Letters Patent of the United States is:-

1. A metallic digging bucket having the metal of its upper surface thickened at through or lmder the spaced points to form bosses extending longitudinally of the bucket from the front edge thereof, each boss being formedwith an open channel merging into a socket having a top wall common with the boss, and a tooth located in each channel and havingits end seated in said s0cket. V

2. A digging bucket having a bottom wall shou der en- Witnesses:

M. E. McNmoH, e C. G. Harmon.

edgle of sad t t eir iiiner JOHN REHALLY. 

